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What is atomic spectra explain its types?
Atomic spectra refer to the distinct lines of light emitted or absorbed by atoms when electrons transition between energy levels. There are two main types of atomic spectra: emission spectra, which are produced when electrons fall to lower energy levels and release energy as photons, resulting in bright lines on a dark background; and absorption spectra, which occur when electrons absorb energy and move to higher energy levels, showing dark lines on a continuous spectrum. Each element has a unique atomic spectrum, acting like a fingerprint for identification.
Can two photons interact with an electron simultaneously?
Yes, two photons can interact with an electron simultaneously. This can occur through a process called two-photon absorption, where the combined energy of the two photons is absorbed by the electron to promote it to a higher energy state.
Why do we emission lines when n electrons return to the ground state?
Emission lines occur when electrons in an atom transition from a higher energy level to a lower energy level, such as returning to the ground state. As they do so, they release energy in the form of photons, which correspond to specific wavelengths of light. These wavelengths are characteristic of the element and result in distinct lines in the emission spectrum. The pattern of these lines is unique for each element, allowing for identification through spectroscopic analysis.
How do emit electrons from copper metal?
Electrons can be emitted from copper metal through a process called photoemission, where photons of sufficient energy strike the copper surface, imparting energy to the electrons and overcoming the work function of the material. Alternatively, thermionic emission can occur when the copper is heated, providing enough thermal energy to allow electrons to escape from the metal's surface. Additionally, in a vacuum, applying a strong electric field can facilitate the emission of electrons through field emission.
Does fission occur in the body?
No, fission does not naturally occur in the human body. Fission is a nuclear reaction that involves the splitting of atomic nuclei, which is not a process that happens in biological organisms.
What happens inside an extinguisher when the handle is pressed?
Combustion occur and emission
Is the emission of radiant energy in the form of waves or particles?
Emission of radiant energy can occur in the form of waves or particles, depending on the specific situation. For example, light is an example of radiant energy that travels in waves, while photons are particles that can also carry radiant energy.
Which term is defined as the emission of energy from subatonic particles?
Radioactivity is the term defined as the emission of energy from subatomic particles, such as alpha particles, beta particles, and gamma rays. These emissions occur from the spontaneous decay of unstable atomic nuclei.
When is gamma rays emitted?
Gamma rays are emitted during nuclear reactions or radioactive decay processes when an atomic nucleus transitions to a lower energy state, releasing high-energy photons in the form of gamma rays. This emission can occur in various situations, such as in nuclear fusion reactions, radioactive decay of unstable isotopes, or high-energy astrophysical phenomena.
Can two photons interact with an electron simultaneously?
Yes, two photons can interact with an electron simultaneously. This can occur through a process called two-photon absorption, where the combined energy of the two photons is absorbed by the electron to promote it to a higher energy state.
What changes in atomic number and mass number occur in beta emission?
Electron (beta minus) decay: the atomic mass remain approx. constant, the atomic number will be greater with 1 Positron (beta plus) and electron capture decay: the atomic mass remain approx. constant, the atomic number decrease with 1 Double beta decay: the atomic mass remain approx. constant, the atomic number will be greater with 2
Does fission occur in the body?
No, fission does not naturally occur in the human body. Fission is a nuclear reaction that involves the splitting of atomic nuclei, which is not a process that happens in biological organisms.
How and why does atomic nuclear decay occur?
Atomic nuclear decay occurs when an unstable atomic nucleus releases energy in the form of radiation to become more stable. This process can happen due to the imbalance of protons and neutrons in the nucleus, leading to the emission of alpha, beta, or gamma particles. The decay helps the nucleus achieve a more balanced state and reduces its energy level.
How many times emission occur in radioactive series?
around ten 10
Does the photoelectric effect occur when light shines on metal?
Yes, the photoelectric effect occurs when light shines on metal. This phenomenon involves the emission of electrons from a material when it is exposed to light. The energy of the photons in the incident light must be sufficient to overcome the work function of the metal in order for electrons to be ejected.
What does emission do to radiation?
Emission refers to the release of radiation from a source. This can occur in various forms such as light, heat, or particles. Emission can either increase the intensity of radiation or change its properties, depending on the source and energy involved.
What causes an emission line 777NM?
An emission line at 777nm is typically caused by the transition of electrons in certain elements from higher energy levels to lower energy levels, releasing photons with a wavelength of 777nm in the process. This can occur in certain gas nebulae, such as those found in regions of active star formation or in the spectra of certain chemical elements.
